Abstract:
The present invention relates to a filter device for removing impurities contained in liquid. A filter housing 18 is provided with a container for accommodating a filter bag 2 therein, a deposit recovery tank 3 for recovering a deposit and a floating material recovery tank 4 for recovering a floating material. Thus, it is possible to prevent any deterioration of filtration performance caused by filtered and separated impurities, and to achieve both of filtration and specific gravity difference separation by a single device.
Abstract:
A process for sealing a ceramic filter by infiltrating a metal into an end of the filter. The process includes the steps of contacting the end of a porous ceramic filter with a molten metal, whereby the metal enters into the ceramic matrix to substantially fill the void space. The ceramic filter is cooled to form a filter having a ceramic-metal composite portion. The present invention also provides a filter having an infiltrated metal seal. Methods for joining infiltrated ends are also provided.
Abstract:
A filter element (3) for filtering a fluid, in particular a urea solution, having an end plate (4), which has an opening (22), and a filter medium (24) which closes the opening (22) and permits a flow of the fluid between a clean side (28) and a raw side (27) of the filter element (3).
Abstract:
The invention relates to a combination filter arrangement (1) having a hollow cylindrical filter element (2) for filtering a first fluid medium, having a temperature compensation medium separated by means of cylindrical separating wall (5), as a second fluid medium in an area between the separating wall (5) and an outer housing (9) of the combination filter arrangement (1). The first fluid medium is made of a urea-water mixture, or comprises a urea-water additive having a higher freezing temperature than the first and the second fluid medium, and at least the separating wall (5) has an elasticity such that the volume expansion by freezing the urea-water additive can be absorbed.
Abstract:
Die Erfindung betrifft ein Verfahren sowohl zum Entfeuchten als auch zum Trocknen von Feststoff-Flüssigkeitsgemischen und eine als Filterpressentrockner ausgebildete Vorrichtung zur Anwendung des Verfahrens. Der Filterpressentrockner ist mit einer definierten Anzahl von nebeneinander und parallel zueinander angeordneten Metallheizkammerfilterplatten (1) und/oder Membranheizkammerfilterplatten (2) bestückt. Das Verfahren besteht aus folgenden, vereinfacht dargestellten Schritten: a) Zuführung der Suspension, b) Ableiten des Filtrats bei gleichzeitigem Zurückhalten der Feststoffanteile als Filterkuchen, c) Aufheizen des Filterkuchens, d) Andrücken des bei der Entwässerung gebildeten Filterkuchens, e) Trocknen des Filterkuchens durch Evakuieren des Brüdenraumes (4) und des Porenraumes im Filterkuchen, f) ein Befüllen des Brüdenraumes (4) und des Porenraumes im Filterkuchen mit Luft oder Inertgas von bis zu 1 bar Überdruck, womit eine Ruhephase bei der Trocknung eingeleitet wird, der Filterkuchen heizt wieder auf, g) eine Wiederholung der Schritte e) und f) bis zum Erreichen des beabsichtigten Trocknungsgrades, h) ein Abschalten des Heizkreislaufs und Beenden der Membrananpressung und g) ein Entfernen des getrockneten Filterkuchens. Damit wird gegenüber den aus dem Stand der Technik bekannten Lösungen eine überraschende Steigerung der Trocknungsgeschwindigkeit erreicht.
Abstract:
Cette installation comprend une conduite (13) de circulation du liquide, qui comporte une portion amont (21), une portion aval (23) et un organe (37) de filtration, interposé entre la portion amont (21) et la portion aval (23) et dans lequel est ménagé au moins un canal (51). Le dit canal (51) est délimité, au moins partiellement, par une paroi poreuse (57). La conduite (13) comporte une double enveloppe d’isolation thermique (14) sous vide, contenant un matériau d’isolation, dans une partie de laquelle est fixé l’organe de filtration (37). L’une desdites portions (21) débouche en regard d’une extrémité dudit canal (51). L’autre desdites portions (23) débouche en regard d’au moins une zone (59) de la paroi poreuse (57). Application à la production de fluides cryogéniques stériles à haut débit.
Abstract:
A process for sealing a ceramic filter by infiltrating a metal into an end of the filter (210). The process includes the steps of contacting the end of a porous ceramic filter with a molten metal (380), whereby the metal enters into the ceramic matrix to substantially fill the void space. The ceramic filter is cooled to form a filter having an infiltrated composite portion (370). The present invention also provides a filter having an infiltrated metal seal (490). Methods for joining infiltrated ends are also provided.
Abstract:
An exhaust-gas aftertreatment device is provided, comprising a control unit for controlling a diaphragm pump that draws a urea/water solution out of a circuit and pumps it, via a pressure filter, to a metering unit comprising an atomizing nozzle for atomizing the urea/water solution into an exhaust-gas stream. The metering unit may also comprise a metering valve, including an atomizing nozzle, a pressure and temperature sensor, a heating means and a return baffle.
Abstract:
An exhaust-gas aftertreatment device is provided, comprising a control unit for controlling a diaphragm pump that draws a urea/water solution out of a circuit and pumps it, via a pressure filter, to a metering unit comprising an atomizing nozzle for atomizing the urea/water solution into an exhaust-gas stream. The metering unit may also comprise a metering valve, including an atomizing nozzle, a pressure and temperature sensor, a heating means and a return baffle.
Abstract:
The invention relates to an exhaust-gas aftertreatment device, comprising a control unit (4) for controlling a diaphragm pump (2) that draws a urea/water solution out of a circuit and pumps it, via a pressure filter (3), to a metering unit comprising an atomizing nozzle for atomizing the urea/water solution into an exhaust-gas stream.In advantageous developments, the metering unit comprises a metering valve, including an atomizing nozzle, a pressure and temperature sensor, a heating means and a return baffle.